public class Main {
    public static void main(String[] args) {
        IList mySingleList = new MySingleList();
        mySingleList.addLast(22);
        mySingleList.addLast(22);
        mySingleList.addLast(22);
        mySingleList.addLast(33);
        mySingleList.display();

        mySingleList.removeAllKey(22);
        mySingleList.display();
    }
}
